Police said 39-year-old Clyde Elliott Sr. was in the restaurant with two children when he saw Winters and went outside. Court papers show that the men knew each other and had got into an argument during which Elliott punched Winters in the face, only to have Winters, who is blind, stab Elliott in the face and chest.

"I said, 'The guy has a knife, I'm calling police,' so by the time I got to the phone, the stabbing had already started," said Melissa Marino, who is a manager at Southside Steaks.

Marino said Elliott stumbled back in to the sandwich shop, bleeding.

"He was saying that he got stabbed in the heart. I could see he was holding pressure on his chest with his shirt, but I could see he was stabbed in the mouth and across the face," said Marino.

Marino said that she and other employees, calmed Elliott's children, then she used paper towels to put pressure on his wounds. She said her training kicked in.

"I was in the Navy. I was a hospital corpsman for six years in critical care nursing and surgical tech," said Marino.

According to court papers, several witnesses stopped to help, with one kicking the knife away from Winters.

Police said Elliott was hospitalized in stable condition Monday and will be charged with simple assault. Winters has been charged with aggravated assault and reckless endangerment.

Allegheny County's most wanted fugitives

1 of 21

The following people have been deemed "Most Wanted" by the Allegheny County Sheriff due to severity of the alleged crime, type of crime and their criminal record. The sheriff says all of them should be considered armed and very dangerous.

HOSPITAL. THIS IS PITTSBURGH ACTION NEWS 4. BY THE TIME I GOT TO THE PHONE, THE STABBING HAD ALREADY STARTED. A CUSTOMER ATTACKED OUTSIDE OF THIS SOUTH SIDE RESTAURANT. THE MANAGER WASTING NO TIME, JUMPING INTO ACTION, TREATING THE VICTIM AND PROTECTING HIS CHILDREN. GOOD EVENING, I'M MIKE CLARK. AND I'M WENDY BELL. HER HEROICS WERE CAUGHT ON CAMERA. PITTSBURGH ACTION NEWS 4 REPORTER MARCIE CIPRIANI WITH THE SURVEILLANCE VIDEO YOU'LL SEE ONLY ON 4. Reporter: THE MANAGER HERE AT SOUTH SIDE STEAKS TOLD ME IT WAS A TYPICAL QUIET SUNDAY EVENING WHEN A MAN CAME IN WITH HIS CHILDREN AND ORDERED SOMETHING TO EAT, BUT WITHIN MINUTES, SHE FOUND HERSELF OUT HERE AND INSTANTLY RUSHING TO HELP HIM. THIS IS SURVEILLANCE VIDEO FROM INSIDE SOUTH SIDE STEAKS. AT THE TOP LEFT OF YOUR SCREEN, YOU CAN SEE THE INJURED MAN SHIRTLESS, LEANING AGAINST A TABLE AS HIS SMALL BOYS ARE ESCORTED AWAY AND THE MANAGER HURRIED TO HELP. HE'S SAYING THAT HE GOT STABBED IN THE HEART. I COULD SEE HE WAS HOLDING PRESSURE ON HIS CHEST WITH HIS SHIRT, BUT I COULD SEE THAT HE WAS STABBED IN THE MOUTH AND ACROSS THE FACE. Reporter: MELISSA MARINO SAYS SHE AND HER COWORKERS FIRSTED CALMED HIS BOYS, WHO WERE HYSTERICAL. CALMED THEM DOWN, THEY GOT TO SEE THEIR DADDY WAS OKAY. Reporter: THEN MARINO WENT TO WORK. THIS IS MARINO ON VIDEO USING THE ROLLS OF PAPER TOWELS ON THE TABLES TO PUT PRESSURE ON THE MAN'S WOUNDS. SHE SAID TREATING HIM WAS INSTINCT. I WAS IN THE NAVY, I WAS A HOSPITAL COREMAN FOR SIX YEARS IN CRITICAL CARE NURSING. Reporter: A FORTUNATE OUTCOME FOR THIS MAN, CLYDE ELLIOT SR. WHEN POLICE ARRIVED, HE WENT TO THE HOSPITAL AND THIS MAN, DEMETRIUS WINTERS WAS TAKEN INTO CUSTODY. THE MEN HAD AN ARGUMENT A FEW BLOCKS EARLIER AND WHEN ELLIOT SPOTTED WINTERS OUTSIDE SOUTH SIDE STEAKS, HE CONFRONTED HIM. WHILE ELLIOT AND WINTERS WERE FIGHTING OUTSIDE, HIS BOYS WERE WATCHING FROM INSIDE AND SHE SPOTTED WINTERS, WHO IS BLIND, WITH A WEAPON. I SAID THE GUY HAS A KNIFE, I'M CALLING THE POLICE. SO BY THE TIME I GOT TO THE PHONE, THE STABBING HAD ALREADY STARTED. Reporter: MARINO SAYS PEOPLE SPOTTED WHAT WAS HAPPENING, GOT THE KNIFE AWAY FROM WINTERS, AND HELD HIM THERE FOR POLICE. THE MANAGER HERE AT SOUTH SIDE STEAKS SAYS SHE IS SO GRATEFUL SHE WAS ABLE TO HELP, AND ACCORDING TO THIS CRIMINAL COMPLAINT, THE MAN WITH THE KNIFE, WINTERS, HE WAS CHARGED HERE AT THE SCENE. AS FOR CLYDE ELLIOT, HE WAS